Colorimeter
AssigneeMinolta Co., Ltd.
InventorsKenji Imura, Kei Sakakibara
Life of this patent
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Abstract
A colorimeter or color measuring device measures color of a sample or an object, and displays measurement value or values according to user defined index or indices, calculated by a user-defined formula. Data of the user-defined formula is read in from outside of the colorimeter and converted into a coded form which can be executed by a controller of the calorimeter. The data of the user-defined formula or the coded data is stored in the colorimeter. Accordingly, the colorimeter has good portability and convenience despite its capability of expressing the colors of various samples or objects by user-defined original index or indices.
Claims20
A color measuring device for measuring color of an illuminated sample comprising:
- a light dispersing unit for dispersing light reflected by or having passed through the sample, into a plurality of spectral band components;
- a photoelectric unit for receiving the dispersed light components and outputting electric signals representative of the intensities of the light components;
- a color measurement value producing unit for producing data of color measurement values according to a predetermined colorimetric system, from the electric signals;
- a receiver for receiving, from outside of the device, data of an index defining formula defined by a user;
- a memory for storing the data of an index defining formula;
- a first converter for converting the data of the index defining formula stored in the memory, into coded data;
- a second converter for executing the calculation according to the coded data of the index defining formula to convert the data of the color measurement values into data of the user-defined index;
- and
- a display for displaying the user-defined index converted by the second converter.
A color measuring device for measuring cooler of an illuminated sample comprising:
- a light dispersing unit for dispersing light reflected by or having passed through the sample, into a plurality of spectral band components;
- a photoelectric unit for receiving the dispersed light components and outputting electric signals representative of the intensities of the light components;
- a color measurement value producing unit for producing data of color measurement values according to a predetermined colorimetric system, from the electric signals;
- a receiver for receiving, from outside of the device, data of an index defining formula defined by a user;
- a first converter for converting the data of the index defining formula received by the receiver, into coded data;
- a memory for storing the coded data of the index defining formula;
- a second converter for executing the calculation according to the stored coded data of the index defining formula to convert the data of the color measurement values into data of the user-defined index;
- and
- a display for displaying the user-defined index converted by the second converter.
A method for converting data of color measurement values according to a predetermined colorimetric system, into indices defined by a user, the method comprising:
- receiving, from outside, data of an index defining formula defined by a user;
- dispersing light reflected by or having passed through an illuminated sample, into a plurality of spectral band components;
- receiving the dispersed light components and outputting electric signals representative of the intensities of the light components;
- producing data of color measurement values according to a predetermined calorimetric system, from the electric signals;
- converting the data of the index defining formula received from the outside, into coded data;
- executing the calculation according to the coded data of the index defining formula to convert the data of the color measurement values into data of the user-defined index;
- and
- displaying the converted user-defined index.
Dependencies are inferred from the claim text.